Rubens painting 'lost' for centuries could sell for $7.7 million

A Rubens painting lost to history and misidentified for almost 300 years has re-emerged with the help of X-ray analysis and could now fetch up to £6 million ($7.7 million) at auction next month.

source https://www.cnn.com/style/article/rubens-painting-rediscovered-auction-intl-scli/index.html